| Geochemical anomalies of hydrothermal plume at EPR 13 degrees N | |
| Wang XiaoYuan; Zeng ZhiGang; Liu ChangHua; Yin XueBo; Yu ShaoXiong; Yuan ChunWei; Zhang GuoLiang; Wang XiaoMei | |
| 2007-09-01 | |
| 发表期刊 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| ISSN | 1006-9313 |
| 卷号 | 50期号:9页码:1433-1440 |
| 文章类型 | Article |
| 摘要 | During the DY105-12, 14cruise (RN DAYANG YIHAO, November 2003) on East Pacific Rise (EPR) 12-13 degrees N, the submarine hydrothermal activity was investigated and the CTD hydrocast was carried out at EPR12 degrees 39 ' N - 12 degrees 54 ' N. From the temperature anomalies and the concentrations of magnesium, chlorine, bromine in seawater samples, we discover that magnesium depletes 9.3%-22.4%, chlorine and bromine enrich 10.3%-28.7% and 10.7%-29.0% respectively relative to normal seawater at the stations which have chemistry anomalies, moreover temperature and chemistry anomalies are at the same layer. The depletion of magnesium in the plume may be caused by a fluid lacking of magnesium which rises after the hydrothermal fluid reaches the equilibrium with ambient seawater, the enrichment of chlorine and bromine might be the result of inputting later brine which is generated by phase separation due to hydrothermal activity. In addition, the Br/CI ratio in the abnormal layers at the survey area is identical to that in seawater, which implies that halite dissolution (or precipitation) occurs neither when the fluid is vented nor when hydrothermal fluid entraining ambient seawater rises to form plume. From the abnormal instance at E55 station, it is very possible that there might exist a new hydrothermal vent site.; During the DY105-12, 14cruise (RN DAYANG YIHAO, November 2003) on East Pacific Rise (EPR) 12-13 degrees N, the submarine hydrothermal activity was investigated and the CTD hydrocast was carried out at EPR12 degrees 39 ' N - 12 degrees 54 ' N. From the temperature anomalies and the concentrations of magnesium, chlorine, bromine in seawater samples, we discover that magnesium depletes 9.3%-22.4%, chlorine and bromine enrich 10.3%-28.7% and 10.7%-29.0% respectively relative to normal seawater at the stations which have chemistry anomalies, moreover temperature and chemistry anomalies are at the same layer. The depletion of magnesium in the plume may be caused by a fluid lacking of magnesium which rises after the hydrothermal fluid reaches the equilibrium with ambient seawater, the enrichment of chlorine and bromine might be the result of inputting later brine which is generated by phase separation due to hydrothermal activity. In addition, the Br/CI ratio in the abnormal layers at the survey area is identical to that in seawater, which implies that halite dissolution (or precipitation) occurs neither when the fluid is vented nor when hydrothermal fluid entraining ambient seawater rises to form plume. From the abnormal instance at E55 station, it is very possible that there might exist a new hydrothermal vent site. |
| 关键词 | Submarine Hydrothermal Activity Plume Hydrothermal Fluid Epr |
| 学科领域 | Geosciences, Multidisciplinary |
| DOI | 10.1007/s11430-007-0087-8 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000249394800016 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/5066 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang XiaoYuan,Zeng ZhiGang,Liu ChangHua,et al. Geochemical anomalies of hydrothermal plume at EPR 13 degrees N[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2007,50(9):1433-1440. |
| APA | Wang XiaoYuan.,Zeng ZhiGang.,Liu ChangHua.,Yin XueBo.,Yu ShaoXiong.,...&Wang XiaoMei.(2007).Geochemical anomalies of hydrothermal plume at EPR 13 degrees N.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,50(9),1433-1440. |
| MLA | Wang XiaoYuan,et al."Geochemical anomalies of hydrothermal plume at EPR 13 degrees N".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 50.9(2007):1433-1440. |
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